4001520146 has 48 divisors (see below), whose sum is σ = 6946057800. Its totient is φ = 1722000384.

The previous prime is 4001520109. The next prime is 4001520161. The reversal of 4001520146 is 6410251004.

It can be written as a sum of positive squares in 12 ways, for example, as 52780225 + 3948739921 = 7265^2 + 62839^2 .

It is a super-2 number, since 2×4001520146² = 32024326957687722632, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 623120 + ... + 629508.

Almost surely, 2^4001520146 is an apocalyptic number.

4001520146 is a deficient number, since it is larger than the sum of its proper divisors (2944537654).

4001520146 is a wasteful number, since it uses less digits than its factorization.

4001520146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6543 (or 6530 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 4001520146 is about 63257.5698711229. The cubic root of 4001520146 is about 1587.6021166130.

The spelling of 4001520146 in words is "four billion, one million, five hundred twenty thousand, one hundred forty-six".